AMERICAN ANGUS ASSOCIATION - THE BUSINESS BREED

Is Late-weaning Calves an Option?

Wintering calves with their mothers can be beneficial.

By Heather Smith Thomas, Field Editor

November 19, 2025

cow-calf

After turning bulls out July 26, North Dakota rancher Jesse Kalberer begins calving in late April-May. You might think he would wean those spring calves in October when he pregnancy-tests the cows; however, the multigenerational rancher turns the calves back with their mothers until Christmas.

“Last year we ultrasounded on the 30th of October and weaned the calves the 22nd of December,” he says, noting the calves do better with an extra two months with their mothers. The calves are able to handle the stress of weaning much better at that older age.

“The only reason we’ve been weaning that early is because we have some bull calves in the group,” he says. “This year I plan to wean the bull and steer calves right before Christmas and turn the heifers back out with their mothers for another month or two and wean them in February.”

If heifers can stay with their mothers longer, they become better cows, he reasons.

Preparing for winter

Most years the ranch has good winter pasture. During the summer, Kalberer won’t graze pastures to be used for wintering pairs, reserving the forage for fall and winter.

“Keeping pairs together that long saves on feed for the weaned calves, with less labor to feed them,” Kalberer says. “This makes a huge difference.”

Kalberer’s goal for the past four years has been to graze all the way through winter.

“Last year was the first year we actually accomplished it,” Kalberer says.

Currently the ranch has 100 cow-calf pairs, plus a lot of heifers as they plan to expand.

“I don’t want our base herd to get much bigger than about 200 to 250, or we’d have to feed a lot of hay,” Kalberer says. “We try to keep the base herd small and not have to feed hay, and it’s really small right now because prices have been so high that we weren’t retaining heifers. We fill our summer pastures with stockers.”

Wintering pairs together is a great program for people who calve in late spring, he says.

“I can leave a calf on them until Christmas, and those cows don’t look any different than they did when I pulled them off summer pasture grass in October.” — Jesse Kalberer

cow-calf

When grazing conditions allow, Kalberer feels late weaning can help calves develop a better-functioning rumen and prepare females to be better cows.

“Our smaller-frame cows do great for this; they don’t lose condition. I can leave a calf on them until Christmas, and those cows don’t look any different than they did when I pulled them off summer pasture grass in October,” Kalberer says. “I don’t have to baby them.”

Any cow that falls apart in the winter or doesn’t wean a calf doesn’t get a second chance.

“I want them to do it themselves,” he says. The process is good for selecting trouble-free cows that hold their condition and put muscle on their steer calves.

“I want a good maternal cow that can graze through winter and take care of herself,” Kalberer says. “Our herd is easy-keeping and if we have to treat a cow special, she doesn’t get to stay here.”

The late weaning really helps the calves, he says, preparing their rumen for weaning.

“I’ve read some things that show the difference between the rumen on a calf that was weaned at 9 months [of age] versus a calf weaned at 5 months. The rumen on that older calf has so much more texture and ability to absorb more nutrients,” Kalberer says. Having even just a little milk from mom for a longer time seems to help the rumen develop more fully, and those cattle are more efficient as adults with a better-functioning rumen.

Editor’s note: Heather Smith Thomas is a freelance writer and cattlewoman from Salmon, Idaho. [Lead photo courtesy Heather Smith Thomas.]

Angus Beef Bulletin EXTRA, Vol. 17, No. 11-B

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